Instructions
RIGOL  Chapter 4 Command System for VSA Mode 
4-46  RSA3000E Programming Guide 
Return Format 
The query returns the reference frequency offset in scientific notation. The unit is Hz. 
Example 
The following command sets the reference frequency offset to 1 MHz.  
:SENSe:DDEMod:FSK:DEViation:REFerence 1000000 
The following query returns 1.000000000e+06.  
:SENSe:DDEMod:FSK:DEViation:REFerence? 
[:SENSe]:DDEMod:FSK:DEViation:REFerence:AUTO 
Syntax 
[:SENSe]:DDEMod:FSK:DEViation:REFerence:AUTO ON|OFF|1|0 
[:SENSe]:DDEMod:FSK:DEViation:REFerence:AUTO? 
Description
Enables or disables the reference frequency offset mode in the FSK modulation. 
Queries the status of the reference frequency offset mode in the FSK modulation. 
Parameter 
Name 
Type 
Range 
Default 
-- 
Bool 
OFF|ON|0|1 
ON|1 
Remarks
ON|1: indicates that Auto mode is selected. 
OFF|0: indicates that Manual mode is selected. 
This command is only valid when you select FSK as the modulation format. 
Return Format
The query returns 0 or 1. 
Example
The following command sets the reference frequency offset mode in the FSK modulation to Auto. 
:SENSe:DDEMod:FSK:DEViation:REFerence:AUTO ON 
or :SENSe:DDEMod:FSK:DEViation:REFerence:AUTO 1 
The following query returns 1.  
:SENSe:DDEMod:FSK:DEViation:REFerence:AUTO? 
[:SENSe]:DDEMod:LOAD:KNOWndata 
Syntax 
[:SENSe]:DDEMod:LOAD:KNOWndata <path>  
[:SENSe]:DDEMod:LOAD:KNOWndata? 
Description
Loads the BER test file from the specified path. 
Queries the BER test file. 










